Marker Wadden: The Netherlands used 37 million tonnes of lake sediment to build new islands, and the artificial wetlands now attract thousands of birds | World News
In the middle of the Netherlands, an unusual experiment in conservation began with an unlikely raw material: mud. Instead of treating the vast quantities of sediment accumulating on the floor of Markermeer as waste, Dutch engineers used it to create a new landscape. They built a chain of islands from sand, clay, silt and other…